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What were the main components of earthโs earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen
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Food contains a sugar called ( ), which is broken down in a process called cellular ( ). this process uses ( ) to break down food molecules and provide energy for cells. fill in the parentheses
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Biology, 22.06.2019 04:30
Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?
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Biology, 22.06.2019 05:40
Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.
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Which theory of mate-selection suggests that people sift eligible mates according to specific criter...
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